ISEE Prep for Parents: What to Know About the Private School Entrance Exam

Your child has set their sights on a top independent school, and the ISEE (Independent School Entrance Exam) sits between them and an acceptance letter. Whether the target is a boarding school such as Phillips Exeter or another competitive independent school (some Canadian schools, including Upper Canada College, Havergal College and Crescent School, use their own assessments for 2027 entry, so check first), a strong ISEE score can make a real difference to the application. Many families, though, are unsure where to start, how long to prepare, or what a competitive score looks like.

This guide covers what parents need to know about ISEE prep: what the test includes, when to begin studying, the scores top private schools expect, and how to put together a preparation plan that sets your child up well.

What the ISEE is and how it is built

The ISEE is a standardized admissions test used by hundreds of independent and private schools across North America. E3n, the nonprofit formed from the merger of the Educational Records Bureau (ERB) and the Enrollment Management Association, runs it at four levels, set by the grade your child is applying to: Primary (grades 2-4), Lower (grades 5-6), Middle (grades 7-8) and Upper (grades 9-12). Most families looking for ISEE prep are aiming at the Middle or Upper level for entry to competitive independent schools.

The exam has five sections:

Section	Content	Questions	Time
Verbal Reasoning	Synonyms and sentence completions	40	20 minutes
Quantitative Reasoning	Mathematical concepts and problem-solving	37	35 minutes
Reading Comprehension	Passages with analytical questions	36	35 minutes
Mathematics Achievement	Grade-level math computation and application	47	40 minutes
Essay	Writing prompt (not scored numerically, sent to schools)	1	30 minutes

Here is a detail that surprises many families: alongside scaled scores and percentile ranks, the ISEE reports stanines from 1 to 9, and schools often focus on those. The Middle and Upper Levels take two hours and 40 minutes plus two 10-minute breaks. A stanine of 7, 8 or 9 is generally seen as competitive for selective private schools.

What ISEE score do top private schools want?

Most competitive independent schools look for stanines of 7 or above in every section. The most selective boarding schools often expect 8 or 9. Still, the ISEE is only one piece of the admissions file. Schools also weigh grades, teacher recommendations, interviews and extracurricular involvement.

This general guide to stanine targets shows what to aim for:

School selectivity	Target stanine	Approximate percentile
Highly selective (top-tier boarding/day schools)	8-9	89th percentile and above
Selective independent schools	7-8	77th-95th percentile
Moderately selective independents	5-7	40th-88th percentile

Remember that percentiles and stanines compare your child with other students in the same grade, over the past three years, who are applying to independent schools, so the comparison group is already academically strong.

When should you start ISEE prep?

Ideally, begin 3 to 6 months before the test date. For fall admission, the ISEE is usually taken between September and January, so preparation should start the spring or summer before. Starting too early can cause burnout, while starting too late leaves too little time to address weak areas and build test-taking stamina.

Experienced private school admissions tutors suggest a timeline like this:

1. 6 months before: Take a full diagnostic practice test to find strengths and weaknesses. Start building vocabulary and reviewing foundational math concepts.
2. 4 months before: Begin structured study sessions (2 to 3 times a week, 45 to 60 minutes each), tackling the two weakest sections first.
3. 2 months before: Raise the practice intensity. Complete timed, full-length practice tests every 2 weeks and sharpen essay-writing skills.
4. 2 weeks before: Ease off. Do a light review and focus on confidence. Make sure your child is well rested and knows the test-day logistics.

A student already working at grade level in a strong academic program may need less time, while one who must close gaps in reading or math will benefit from the full 6-month runway.

The best ISEE prep strategies for each section

Each section rewards a slightly different skill set. These strategies target the four scored sections.

Verbal Reasoning

Vocabulary is the foundation here. Students should build a dedicated ISEE word list and study 10 to 15 new words a day with flashcards or spaced-repetition apps. For sentence completions, practice spotting context clues and eliminating wrong answers. Wide reading (good fiction, nonfiction and news articles) also builds the passive vocabulary this section tests.

Quantitative Reasoning

This section tests mathematical thinking and problem-solving more than computation. Students should concentrate on number properties, patterns, algebraic reasoning and word problems. Practice turning word problems into equations quickly, and learn to estimate before calculating to save time on test day.

Reading Comprehension

Students should practice active reading: annotating passages, finding main ideas, and telling stated facts apart from inferences. Timed practice matters a great deal, because many students struggle to finish in the 35-minute window. Aim for roughly 5 minutes per passage.

Mathematics Achievement

This section covers grade-level math, so any gap in the school curriculum shows up here. Review core topics such as fractions, decimals, percentages, geometry and basic statistics. For Upper Level test-takers, algebra and introductory geometry are heavily tested. Timed drills build speed and accuracy.

Should you hire an ISEE tutor or prepare on your own?

Many families can handle basic ISEE prep at home with published practice tests and study guides from the test maker. An experienced ISEE tutor does offer several advantages, though, especially for students aiming at the most competitive schools. A qualified tutor can locate specific weaknesses through diagnostic testing, write a customized study plan, teach test-taking strategies that are hard to learn from a book, and provide accountability and pacing throughout.

One-on-one tutoring is most valuable when a student needs to improve by 2 or more stanine points, when there are particular content gaps in math or reading, or when test anxiety is a significant factor. A tutor who has taught at, or knows, the schools your child is applying to can also give insight into what admissions committees look for beyond the scores.

At Bosen Academics, we help students prepare for private school entrance exams, including the ISEE and SSAT, with experienced classroom teachers who understand what admissions committees want. If your family is preparing for the ISEE and would like expert support, book a free consultation to learn how we can help, or see our tutoring services.

Setting your child up for ISEE success

Strong ISEE preparation combines early planning, targeted practice and steady effort over several months. Begin with a diagnostic test to see where your child stands, build a study schedule that tackles weak areas without overwhelming them, and use timed practice tests to build confidence and stamina. With the right approach, your child can arrive on test day prepared and assured.